Window lock



FIG. 1 is a top, front, and left side perspective view of a window lock showing my new design;

FIG. 2 is a left side elevational view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a right side elevational view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof; and

FIG. 7 is a top, front, and left side perspective view thereof, with the handle portion shown rotated to an alternate position. 

The ornamental design for a window lock, as shown and described. 